php多維數組怎麼去除重複值-PHP問題-PHP中文網

php多維數組怎麼去除重複值

青灯夜游

發布： 2023-03-12 10:46:02

原創

3682 人瀏覽過

php多維數組去除重複值的方法：1、使用「array_map('serialize', $arr)」將多維數組轉換為以字串形式的一維數組；2、使用array_unique()去除一維數組中的重複值；3、去重後的一維數組重新轉換為多維數組。

php多維數組怎麼去除重複值

本教學操作環境：windows7系統、PHP7.1版，DELL G3電腦

php多維數組移除重複值

1、實作多維數組去除重複值的函數

function array_unique_new($arr) {
	$t = array_map(&#39;serialize&#39;, $arr);
	//利用serialize()方法将数组转换为以字符串形式的一维数组
	$t = array_unique($t);
	//去掉重复值
	$new_arr = array_map(&#39;unserialize&#39;, $t);
	//然后将刚组建的一维数组转回为php值
	return $new_arr;
}

登入後複製

2、需要移除重複值的陣列

$arr = array( 
	array(&#39;sup_name&#39; => &#39;上海&#39;, &#39;cn_name&#39; => &#39;EthylAcetate&#39;, &#39;en_name&#39; => &#39;乙酸乙酯1&#39;, &#39;pinyin&#39; => &#39;yisuanyizhi&#39;, &#39;pro_info&#39; => &#39;耗材&#39;, ), 
	array(&#39;sup_name&#39; => &#39;上海2&#39;, &#39;cn_name&#39; => &#39;EthylAcetate&#39;, &#39;en_name&#39; => &#39;乙酸乙酯2&#39;, &#39;pinyin&#39; => &#39;yisuanyizhi&#39;, &#39;pro_info&#39; => &#39;耗材&#39;, ), 
	array(&#39;sup_name&#39; => &#39;上海4&#39;, &#39;cn_name&#39; => &#39;EthylAcetate&#39;, &#39;en_name&#39; => &#39;乙酸乙酯1&#39;, &#39;pinyin&#39; => &#39;yisuanyizhi&#39;, &#39;pro_info&#39; => &#39;耗材&#39;, ), 
	array(&#39;sup_name&#39; => &#39;上海&#39;, &#39;cn_name&#39; => &#39;EthylAcetate&#39;, &#39;en_name&#39; => &#39;乙酸乙酯3&#39;, &#39;pinyin&#39; => &#39;yisuanyizhi&#39;, &#39;pro_info&#39; => &#39;耗材&#39;, ), 
	array(&#39;sup_name&#39; => &#39;上海1&#39;, &#39;cn_name&#39; => &#39;EthylAcetate&#39;, &#39;en_name&#39; => &#39;乙酸乙酯4&#39;, &#39;pinyin&#39; => &#39;yisuanyizhi&#39;, &#39;pro_info&#39; => &#39;耗材&#39;, ), 
	array(&#39;sup_name&#39; => &#39;上海&#39;, &#39;cn_name&#39; => &#39;EthylAcetate&#39;, &#39;en_name&#39; => &#39;乙酸乙酯3&#39;, &#39;pinyin&#39; => &#39;yisuanyizhi&#39;, &#39;pro_info&#39; => &#39;耗材&#39;, ), 
	array(&#39;sup_name&#39; => &#39;上海1&#39;, &#39;cn_name&#39; => &#39;EthylAcetate&#39;, &#39;en_name&#39; => &#39;乙酸乙酯4&#39;, &#39;pinyin&#39; => &#39;yisuanyizhi&#39;, &#39;pro_info&#39; => &#39;耗材&#39;, ), 
);

登入後複製

輸出看看：

php多維數組怎麼去除重複值

3、執行測試

$new_arr = array_unique_new($arr);

echo &#39;<pre/>&#39;;
print_r($new_arr);

登入後複製

php多維數組怎麼去除重複值

#推薦學習：《PHP影片教學》

以上是php多維數組怎麼去除重複值的詳細內容。更多資訊請關注PHP中文網其他相關文章！